Obey supplied expiration time ShortenReq.ExpiresAfter

.air.toml

@@ -0,0 +1,37 @@
+root = "."
+testdata_dir = "testdata"
+tmp_dir = "tmp"
+
+[build]
+  args_bin = []
+  bin = "./tmp/main"
+  cmd = "go build -o ./tmp/main ."
+  delay = 1000
+  exclude_dir = ["assets", "tmp", "vendor", "testdata"]
+  exclude_file = []
+  exclude_regex = ["_test.go"]
+  exclude_unchanged = false
+  follow_symlink = false
+  full_bin = ""
+  include_dir = []
+  include_ext = ["go", "tpl", "tmpl", "html"]
+  kill_delay = "0s"
+  log = "build-errors.log"
+  send_interrupt = false
+  stop_on_error = true
+
+[color]
+  app = ""
+  build = "yellow"
+  main = "magenta"
+  runner = "green"
+  watcher = "cyan"
+
+[log]
+  time = false
+
+[misc]
+  clean_on_exit = false
+
+[screen]
+  clear_on_rebuild = false

.docker/prometheus/alert.yml

@@ -0,0 +1,6 @@
+groups:
+  - name: DemoAlerts
+    rules:
+      - alert: InstanceDown 
+        expr: up{job="services"} < 1 
+        for: 5m

.docker/prometheus/prometheus.yml

@@ -0,0 +1,17 @@
+global:
+  scrape_interval: 30s
+  scrape_timeout: 10s
+
+rule_files:
+  - alert.yml
+
+scrape_configs:
+  - job_name: services
+    metrics_path: /metrics
+    static_configs:
+      - targets:
+          - 'prometheus:9090'
+  - job_name: 'file_ds'
+    file_sd_configs:
+    - files:
+      - targets.json

.docker/prometheus/targets.json

@@ -0,0 +1,10 @@
+[
+    {
+        "targets": [
+            "api:9091"
+        ],
+        "labels": {
+            "job": "5f11-api"
+        }
+    }
+]

.gitignore

@@ -23,3 +23,4 @@ go.work
 
 # Artefacts
 5feet11
+tmp

5feet11.api

@@ -8,29 +8,28 @@ info (
 
 type (
 	ExpandReq {
-		Snowflake string `path:"snowflake"`
+		ID string `path:"id"`
 	}
 
 	ExpandResp {
-		RedirectUrl string `json:"redirectUrl"`
+		LongUrl string `json:"longUrl"`
 	}
 )
 
 type (
 	ShortenReq {
-		RedirectUrl string `json:"redirectUrl"`
-		Secret      string `json:"secret,optional"`
-		ExpiresIn   int64  `json:"expiresIn,optional"`
+		LongUrl      string `json:"longUrl"`
+		ExpiresAfter int64  `json:"expiresAfter,optional"`
 	}
 
 	ShortenResp {
-		Id string `json:"id"`
+		ID string `json:"id"`
 	}
 )
 
 service fivefeeteleven-api {
 	@handler ExpandUrl
-	get /:snowflake(ExpandReq) returns(ExpandResp)
+	get /:id(ExpandReq) returns(ExpandResp)
 	
 	@handler ShortenUrl
 	post /redirect(ShortenReq) returns(ShortenResp)

docker-compose.yml

@@ -4,8 +4,26 @@ services:
   scylla:
     image: scylladb/scylla
     ports:
-      - "7000:7000"
-      - "7001:7001"
-      - "9042:9042"
-      - "9160:9160"
-      - "10000:10000"
+      - 7000:7000
+      - 7001:7001
+      - 9042:9042
+      - 9160:9160
+      - 10000:10000
+  prometheus:
+    image: prom/prometheus:v2.30.3
+    ports:
+      - 9090:9090
+    volumes:
+      - .docker/prometheus:/etc/prometheus
+      - prometheus-data:/prometheus
+    command: --web.enable-lifecycle  --config.file=/etc/prometheus/prometheus.yml
+  # api:
+  #   build:
+  #     context: .
+  #   ports:
+  #     - 5111:5111
+  #   depends_on:
+  #     - scylla
+
+volumes:
+  prometheus-data:

etc/fivefeeteleven-api.yaml

@@ -4,4 +4,8 @@ Host: 0.0.0.0
 Port: 5111
 ScyllaDB:
   Hosts:
-    - "localhost"
+    - localhost
+# Prometheus:
+#   Host: 0.0.0.0
+#   Port: 9091
+#   Path: /metrics

internal/db/models.go

@@ -4,13 +4,12 @@ import "github.com/scylladb/gocqlx/v2/table"
 
 var UrlTable = table.New(table.Metadata{
 	Name:    "fivefeeteleven.urls",
-	Columns: []string{"id", "redirect_url", "secret"},
+	Columns: []string{"id", "long_url"},
 	PartKey: []string{"id"},
 	SortKey: []string{},
 })
 
 type UrlModel struct {
-	Id          string
-	RedirectUrl string
-	Secret      *string
+	ID      string
+	LongUrl string
 }

internal/db/seed.go

@@ -15,8 +15,7 @@ func Seed(session gocqlx.Session) error {
 	err = session.ExecStmt(`
 		CREATE TABLE IF NOT EXISTS fivefeeteleven.urls (
 			id text PRIMARY KEY,
-			redirect_url text,
-			secret text
+			long_url text
 		)`)
 
 	if err != nil {

internal/handler/expandurlhandler.go

@@ -23,7 +23,7 @@ func ExpandUrlHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
 		if err != nil {
 			httpx.Error(w, err)
 		} else {
-			http.Redirect(w, r, resp.RedirectUrl, http.StatusTemporaryRedirect)
+			http.Redirect(w, r, resp.LongUrl, http.StatusTemporaryRedirect)
 		}
 	}
 }

internal/handler/routes.go

@@ -14,7 +14,7 @@ func RegisterHandlers(server *rest.Server, serverCtx *svc.ServiceContext) {
 		[]rest.Route{
 			{
 				Method:  http.MethodGet,
-				Path:    "/:snowflake",
+				Path:    "/:id",
 				Handler: ExpandUrlHandler(serverCtx),
 			},
 			{

internal/logic/expandurllogic.go

@@ -26,8 +26,8 @@ func NewExpandUrlLogic(ctx context.Context, svcCtx *svc.ServiceContext) *ExpandU
 }
 
 func (l *ExpandUrlLogic) ExpandUrl(req *types.ExpandReq) (resp *types.ExpandResp, err error) {
-	queryUrl := db.UrlTable.SelectBuilder("redirect_url").Query(l.svcCtx.DB)
-	queryUrl.BindStruct(db.UrlModel{Id: req.Snowflake})
+	queryUrl := db.UrlTable.SelectBuilder("long_url").Query(l.svcCtx.DB)
+	queryUrl.BindStruct(db.UrlModel{ID: req.ID})
 
 	var urls []db.UrlModel
 	if err := queryUrl.Select(&urls); err != nil {
@@ -39,7 +39,7 @@ func (l *ExpandUrlLogic) ExpandUrl(req *types.ExpandReq) (resp *types.ExpandResp
 	}
 
 	resp = &types.ExpandResp{
-		RedirectUrl: urls[0].RedirectUrl,
+		LongUrl: urls[0].LongUrl,
 	}
 
 	return resp, err

internal/logic/shortenurllogic.go

@@ -27,12 +27,17 @@ func NewShortenUrlLogic(ctx context.Context, svcCtx *svc.ServiceContext) *Shorte
 
 func (l *ShortenUrlLogic) ShortenUrl(req *types.ShortenReq) (resp *types.ShortenResp, err error) {
 	id := l.svcCtx.Snowflake.Generate().Base58()
+	insertBuilder := db.UrlTable.InsertBuilder()
 
-	insertUrl := db.UrlTable.InsertBuilder().TTL(30 * time.Second).Query(l.svcCtx.DB)
+	logx.Info(req.ExpiresAfter)
+	if req.ExpiresAfter != 0 {
+		insertBuilder.TTL(time.Second * time.Duration(req.ExpiresAfter))
+	}
+
+	insertUrl := insertBuilder.Query(l.svcCtx.DB)
 	insertUrl.BindStruct(db.UrlModel{
-		Id:          id,
-		RedirectUrl: req.RedirectUrl,
-		Secret:      &req.Secret,
+		ID:      id,
+		LongUrl: req.LongUrl,
 	})
 
 	if err := insertUrl.ExecRelease(); err != nil {
@@ -40,7 +45,7 @@ func (l *ShortenUrlLogic) ShortenUrl(req *types.ShortenReq) (resp *types.Shorten
 	}
 
 	resp = &types.ShortenResp{
-		Id: id,
+		ID: id,
 	}
 	return resp, nil
 }

internal/types/types.go

@@ -2,19 +2,18 @@
 package types
 
 type ExpandReq struct {
-	Snowflake string `path:"snowflake"`
+	ID string `path:"id"`
 }
 
 type ExpandResp struct {
-	RedirectUrl string `json:"redirectUrl"`
+	LongUrl string `json:"longUrl"`
 }
 
 type ShortenReq struct {
-	RedirectUrl string `json:"redirectUrl"`
-	Secret      string `json:"secret,optional"`
-	ExpiresIn   int64  `json:"expiresIn,optional"`
+	LongUrl      string `json:"longUrl"`
+	ExpiresAfter int64  `json:"expiresAfter,optional"`
 }
 
 type ShortenResp struct {
-	Id string `json:"id"`
+	ID string `json:"id"`
 }